prism-asciidoc.js

(function (Prism) {

	var attributes = {
		pattern: /(^[ \t]*)\[(?!\[)(?:(["'$`])(?:(?!\2)[^\\]|\\.)*\2|\[(?:[^\[\]\\]|\\.)*\]|[^\[\]\\"'$`]|\\.)*\]/m,
		lookbehind: true,
		inside: {
			'quoted': {
				pattern: /([$`])(?:(?!\1)[^\\]|\\.)*\1/,
				inside: {
					'punctuation': /^[$`]|[$`]$/
				}
			},
			'interpreted': {
				pattern: /'(?:[^'\\]|\\.)*'/,
				inside: {
					'punctuation': /^'|'$/
					// See rest below
				}
			},
			'string': /"(?:[^"\\]|\\.)*"/,
			'variable': /\w+(?==)/,
			'punctuation': /^\[|\]$|,/,
			'operator': /=/,
			// The negative look-ahead prevents blank matches
			'attr-value': /(?!^\s+$).+/
		}
	};

	var asciidoc = Prism.languages.asciidoc = {
		'comment-block': {
			pattern: /^(\/{4,})(?:\r?\n|\r)(?:[\s\S]*(?:\r?\n|\r))??\1/m,
			alias: 'comment'
		},
		'table': {
			pattern: /^\|={3,}(?:(?:\r?\n|\r(?!\n)).*)*?(?:\r?\n|\r)\|={3,}$/m,
			inside: {
				'specifiers': {
					pattern: /(?:(?:(?:\d+(?:\.\d+)?|\.\d+)[+*](?:[<^>](?:\.[<^>])?|\.[<^>])?|[<^>](?:\.[<^>])?|\.[<^>])[a-z]*|[a-z]+)(?=\|)/,
					alias: 'attr-value'
				},
				'punctuation': {
					pattern: /(^|[^\\])[|!]=*/,
					lookbehind: true
				}
				// See rest below
			}
		},

		'passthrough-block': {
			pattern: /^(\+{4,})(?:\r?\n|\r)(?:[\s\S]*(?:\r?\n|\r))??\1$/m,
			inside: {
				'punctuation': /^\++|\++$/
				// See rest below
			}
		},
		// Literal blocks and listing blocks
		'literal-block': {
			pattern: /^(-{4,}|\.{4,})(?:\r?\n|\r)(?:[\s\S]*(?:\r?\n|\r))??\1$/m,
			inside: {
				'punctuation': /^(?:-+|\.+)|(?:-+|\.+)$/
				// See rest below
			}
		},
		// Sidebar blocks, quote blocks, example blocks and open blocks
		'other-block': {
			pattern: /^(--|\*{4,}|_{4,}|={4,})(?:\r?\n|\r)(?:[\s\S]*(?:\r?\n|\r))??\1$/m,
			inside: {
				'punctuation': /^(?:-+|\*+|_+|=+)|(?:-+|\*+|_+|=+)$/
				// See rest below
			}
		},

		// list-punctuation and list-label must appear before indented-block
		'list-punctuation': {
			pattern: /(^[ \t]*)(?:-|\*{1,5}|\.{1,5}|(?:[a-z]|\d+)\.|[xvi]+\))(?= )/im,
			lookbehind: true,
			alias: 'punctuation'
		},
		'list-label': {
			pattern: /(^[ \t]*)[a-z\d].+(?::{2,4}|;;)(?=\s)/im,
			lookbehind: true,
			alias: 'symbol'
		},
		'indented-block': {
			pattern: /((\r?\n|\r)\2)([ \t]+)\S.*(?:(?:\r?\n|\r)\3.+)*(?=\2{2}|$)/,
			lookbehind: true
		},

		'comment': /^\/\/.*/m,
		'title': {
			pattern: /^.+(?:\r?\n|\r)(?:={3,}|-{3,}|~{3,}|\^{3,}|\+{3,})$|^={1,5} .+|^\.(?![\s.]).*/m,
			alias: 'important',
			inside: {
				'punctuation': /^(?:\.|=+)|(?:=+|-+|~+|\^+|\++)$/
				// See rest below
			}
		},
		'attribute-entry': {
			pattern: /^:[^:\r\n]+:(?: .*?(?: \+(?:\r?\n|\r).*?)*)?$/m,
			alias: 'tag'
		},
		'attributes': attributes,
		'hr': {
			pattern: /^'{3,}$/m,
			alias: 'punctuation'
		},
		'page-break': {
			pattern: /^<{3,}$/m,
			alias: 'punctuation'
		},
		'admonition': {
			pattern: /^(?:TIP|NOTE|IMPORTANT|WARNING|CAUTION):/m,
			alias: 'keyword'
		},
		'callout': [
			{
				pattern: /(^[ \t]*)<?\d*>/m,
				lookbehind: true,
				alias: 'symbol'
			},
			{
				pattern: /<\d+>/,
				alias: 'symbol'
			}
		],
		'macro': {
			pattern: /\b[a-z\d][a-z\d-]*::?(?:[^\s\[\]]*\[(?:[^\]\\"']|(["'])(?:(?!\1)[^\\]|\\.)*\1|\\.)*\])/,
			inside: {
				'function': /^[a-z\d-]+(?=:)/,
				'punctuation': /^::?/,
				'attributes': {
					pattern: /(?:\[(?:[^\]\\"']|(["'])(?:(?!\1)[^\\]|\\.)*\1|\\.)*\])/,
					inside: attributes.inside
				}
			}
		},
		'inline': {
			/*
			The initial look-behind prevents the highlighting of escaped quoted text.

			Quoted text can be multi-line but cannot span an empty line.
			All quoted text can have attributes before [foobar, 'foobar', baz="bar"].

			First, we handle the constrained quotes.
			Those must be bounded by non-word chars and cannot have spaces between the delimiter and the first char.
			They are, in order: _emphasis_, ``double quotes'', `single quotes', `monospace`, 'emphasis', *strong*, +monospace+ and #unquoted#

			Then we handle the unconstrained quotes.
			Those do not have the restrictions of the constrained quotes.
			They are, in order: __emphasis__, **strong**, ++monospace++, +++passthrough+++, ##unquoted##, $$passthrough$$, ~subscript~, ^superscript^, {attribute-reference}, [[anchor]], [[[bibliography anchor]]], <<xref>>, (((indexes))) and ((indexes))
			 */
			pattern: /(^|[^\\])(?:(?:\B\[(?:[^\]\\"']|(["'])(?:(?!\2)[^\\]|\\.)*\2|\\.)*\])?(?:\b_(?!\s)(?: _|[^_\\\r\n]|\\.)+(?:(?:\r?\n|\r)(?: _|[^_\\\r\n]|\\.)+)*_\b|\B``(?!\s).+?(?:(?:\r?\n|\r).+?)*''\B|\B`(?!\s)(?:[^`'\s]|\s+\S)+['`]\B|\B(['*+#])(?!\s)(?: \3|(?!\3)[^\\\r\n]|\\.)+(?:(?:\r?\n|\r)(?: \3|(?!\3)[^\\\r\n]|\\.)+)*\3\B)|(?:\[(?:[^\]\\"']|(["'])(?:(?!\4)[^\\]|\\.)*\4|\\.)*\])?(?:(__|\*\*|\+\+\+?|##|\$\$|[~^]).+?(?:(?:\r?\n|\r).+?)*\5|\{[^}\r\n]+\}|\[\[\[?.+?(?:(?:\r?\n|\r).+?)*\]?\]\]|<<.+?(?:(?:\r?\n|\r).+?)*>>|\(\(\(?.+?(?:(?:\r?\n|\r).+?)*\)?\)\)))/m,
			lookbehind: true,
			inside: {
				'attributes': attributes,
				'url': {
					pattern: /^(?:\[\[\[?.+?\]?\]\]|<<.+?>>)$/,
					inside: {
						'punctuation': /^(?:\[\[\[?|<<)|(?:\]\]\]?|>>)$/
					}
				},
				'attribute-ref': {
					pattern: /^\{.+\}$/,
					inside: {
						'variable': {
							pattern: /(^\{)[a-z\d,+_-]+/,
							lookbehind: true
						},
						'operator': /^[=?!#%@$]|!(?=[:}])/,
						'punctuation': /^\{|\}$|::?/
					}
				},
				'italic': {
					pattern: /^(['_])[\s\S]+\1$/,
					inside: {
						'punctuation': /^(?:''?|__?)|(?:''?|__?)$/
					}
				},
				'bold': {
					pattern: /^\*[\s\S]+\*$/,
					inside: {
						punctuation: /^\*\*?|\*\*?$/
					}
				},
				'punctuation': /^(?:``?|\+{1,3}|##?|\$\$|[~^]|\(\(\(?)|(?:''?|\+{1,3}|##?|\$\$|[~^`]|\)?\)\))$/
			}
		},
		'replacement': {
			pattern: /\((?:C|TM|R)\)/,
			alias: 'builtin'
		},
		'entity': /&#?[\da-z]{1,8};/i,
		'line-continuation': {
			pattern: /(^| )\+$/m,
			lookbehind: true,
			alias: 'punctuation'
		}
	};


	// Allow some nesting. There is no recursion though, so cloning should not be needed.

	function copyFromAsciiDoc(keys) {
		keys = keys.split(' ');

		var o = {};
		for (var i = 0, l = keys.length; i < l; i++) {
			o[keys[i]] = asciidoc[keys[i]];
		}
		return o;
	}

	attributes.inside['interpreted'].inside.rest = copyFromAsciiDoc('macro inline replacement entity');

	asciidoc['passthrough-block'].inside.rest = copyFromAsciiDoc('macro');

	asciidoc['literal-block'].inside.rest = copyFromAsciiDoc('callout');

	asciidoc['table'].inside.rest = copyFromAsciiDoc('comment-block passthrough-block literal-block other-block list-punctuation indented-block comment title attribute-entry attributes hr page-break admonition list-label callout macro inline replacement entity line-continuation');

	asciidoc['other-block'].inside.rest = copyFromAsciiDoc('table list-punctuation indented-block comment attribute-entry attributes hr page-break admonition list-label macro inline replacement entity line-continuation');

	asciidoc['title'].inside.rest = copyFromAsciiDoc('macro inline replacement entity');


	// Plugin to make entity title show the real entity, idea by Roman Komarov
	Prism.hooks.add('wrap', function (env) {
		if (env.type === 'entity') {
			env.attributes['title'] = env.content.replace(/&amp;/, '&');
		}
	});

	Prism.languages.adoc = Prism.languages.asciidoc;
}(Prism));